Remote code execution in Microsoft XML Core Services

Published: 2012-06-12 | Updated: 2017-01-10
Risk Critical
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2012-1889
Exploitation vector Network
Public exploit This vulnerability is being exploited in the wild.
Vulnerable software
Microsoft XML Core Services
Client/Desktop applications / Other client software

Vendor Microsoft

Security Bulletin

This security bulletin contains one critical risk vulnerability.

1) Memory corruption


Risk: Critical

CVSSv3.1: 9.2 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2012-1889

CWE-ID: CWE-119 - Memory corruption

Exploit availability: Yes


The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to boundary error in XML Core Services (MSXML) when attempting to access an object in memory that has not been initialized. A remote attacker can create a specially crafted Web site, trick the victim into viewing it, trigger memory corruption and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability results in arbitrary code execution on the vulnerable system.

Note: the vulnerability was being actively exploited.


Install update from vendor's website.

Vulnerable software versions

Microsoft XML Core Services: 3.0 - 6.0

External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.